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absolute zero noun

  /ˈæb.səˌlut ˈzi.ɹoʊ/ , /ˌæb.səˈljut ˈzi.ɹoʊ/
  • (physics) The coldest possible temperature, equivalent to zero on the Kelvin scale, or approximately −273.15 °C, −459.67 °F; a total absence of heat; the temperature at which the motion of all molecules would cease. [First attested in the early 19th century.]
 zero assoluto
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